Warm-up:

Decide if the image is isometric, orthographic, a net, or foundation.

10

101230

20 13 90

40

1.3: POINTS, LINES, AND PLANES

Pick a partner

1.) One partner get 2 different colored sheets of paper and scissors

2.) Fold paper hamburger style and cut

Space is defined as a set of all points

Collinear points are points that lie on the same line.

Coplanar points are …Points that lie on the same plane

Collinear points:

Non collinear points:

Name the planes using 4 letters

No Warmup: Grab a textbook and…Use pages 18-19 to complete

postulates 1-1 to 1-4

Answers: p. 19-20: 1-43 odds

1.) No 21.) QUX and QUV

3.) Yes, line BF 23.) UXT and WXT

5.) Yes, line BF 25.) shade right side

7.) no 27.) Shade diagonal rectangle

9.) Line AG, AC… 29.) Shade diagonal rectangle

11.) ABCD 31.) X

13.) ABHF 33.) Q

15.) EFAD 35.) no

17.) Line RS 37.) no

19.) Line UV 39.) coplanar 41.) coplanar

43.) noncoplanar

A postulate or axiom is an accepted statement of fact. We don’t need to “prove” these statements are true. Most dogs bark. Triangles have 3 sides

Hwk:

p. 19-20, 1-43 odds